Title:
PLURAL BEAM SCANNERS
Document Type and Number:
Japanese Patent JPH01189623
Kind Code:
A
Abstract:
PURPOSE:To efficiently use the light quantity of a light source by providing an optical member to expand the light flux diameter of a component parallel to the deflected scanning surface of a light flux from a light source part between a light deflecting device and the light source part to generate plural laser light fluxes. CONSTITUTION:The light fluxes emitted from light emitting parts 11a and 11b provided at a semiconductor laser 11 is made incident on a collimator lens 12 as light emitting distribution indicated in a figure. The light made incident on the collimator lens 12 is made into the parallel light, and emitted from an aperture 13. In such a case, since the aperture 13 has a form matching the light emitted distribution of the semiconductor laser, the light flux of the semiconductor laser can be effectively utilized. For the light emitted from a prism 14, because of the short focal length of a cylindrical lens and the effect of the prism 14, the interval of a linear image can be much reduced compared with that currently in use, and the dislocation of image formation is set in the allowable value of a focal dislocation.
Inventors:
TATSUOKA MASAMICHI
Application Number:
JP1523888A
Publication Date:
July 28, 1989
Filing Date:
January 25, 1988
Export Citation:
Assignee:
CANON KK
International Classes:
G02B26/10; G02B27/00; G02B27/09; H04N1/04; H04N1/113; H04N1/23; (IPC1-7): G02B26/10; G02B27/00; H04N1/04; H04N1/23
Attorney, Agent or Firm:
Marushima Giichi
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